期刊
PHYSICS OF FLUIDS
卷 34, 期 11, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0124066
关键词
-
资金
- Indian Institute of Technology Kharagpur, India [IIT/SRIC/ISIRD/2018-19]
This study explores the stabilization mechanism of the fluid-fluid interface in the radial Hele-Shaw cell using a non-Newtonian fluid. It is found that the interface can be stabilized by a non-linear injection rate related to the rheology of the displaced fluid. A quantitative criterion, represented by the dimensionless parameter J, is proposed to control pattern formation and suppress fingering in shear thinning fluids.
We explore the stabilization mechanism of the fluid-fluid interface in the radial Hele-Shaw cell, displacing a non-Newtonian fluid. It is possible to stabilize the interface following a non-linear injection rate, Q similar to t(-(2 - n) / (2 + n)), which is related to the displaced fluid rheology (n : power-law index). This suggests the absence of fingering at constant injection when n similar to 2. We propose a quantitative criterion to control the pattern formation and suppress fingering, through the dimensionless parameter J as a function of the physical and operating parameters, which is applicable for a generalized shear thinning fluid. The parameter J is related to the capillary number in the context of the power-law fluid, relating to the viscous and interfacial forces. The fingering morphology at higher order modes is affected by non-linear effects. The results are non-intuitive, and we have shown a feasible approach toward long term fingering stabilization. Published under an exclusive license by AIP Publishing.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据